Mineral oils: processes and products – Fractionation – Liquid extraction with solvents
Patent
1989-02-21
1991-03-05
McFarlane, Anthony
Mineral oils: processes and products
Fractionation
Liquid extraction with solvents
208321, 208326, 585804, 585807, 585808, 585835, 585860, 585863, 203 43, 203 45, 203 46, 203 58, C10G 2120, C10G 2128
Patent
active
049975471
ABSTRACT:
In the method for the production of an aromate concentrate suitable for use as blending component for gasifier fuel, feed hydrocarbon mixtures having boiling ranges substantially between 40.degree. and 170.degree. C., are subjected, without any previous separation into individual fractions, to an extractive distillation employing N-substituted morpholine, substituents of which display no more than seven C-atoms, as selective solvent. Herewith, the lower boiling non-aromates with a boiling range up to about 105.degree. C., practically completely, and most of the higher boiling non-aromates with a boiling range between about 105.degree. and 160.degree. C., are recovered as raffinate, whereas the aromates, which are to be employed in whole or in part as blending component, come down in the extract of the extractive distillation. In order to separate heavy aromates from solvent, a partial stream of the circulating solvent is mixed with water, and the heavy aromates are separated as a light phase from the solvent-water mixture. The solvent-water mixture is then separated into its components, which are re-utilized.
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Emmrich Gerd
Firnhaber Bernhard
Schulze Martin
Krupp Koppers GmbH
McFarlane Anthony
Phan Nhat
Striker Michael J.
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